If you install the module on a site that doesn't have the taxonomy module installed you get this error:
[error] Error: Call to a member function setHandlerClass() on null in taxonomy_term_revision_entity_type_alter() (line 57 of /var/www/html/****/web/modules/contrib/taxonomy_term_revision/taxonomy_term_revision.module) #0 /var/www/html/****/web/core/lib/Drupal/Core/Extension/ModuleHandler.php(562): taxonomy_term_revision_entity_type_alter(Array, NULL, NULL)
among others, I'm sure. Also, it just makes sense that you'd want to require the Taxonomy module to be enabled for this to work.
This is most relevant if you're installing a fresh site from existing config, where this module is already enabled.
Either install a site fresh using existing config, or disable the taxonomy module on an existing site where this module is enabled.
Add the dependency
Review the patch
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Needs review
1.0
Code
Actually, messed that one up. Here's the real patch.
Rerolled for with the 10.x compatible release (8.x-1.1)